Kenwood TS-990SHF User's Manual
Contents
1. USB Connector USB B PC Control USB Audio Display Connector DVI I External Display Connection Terminal LAN Connector RJ 45 PC Control Time Correction NTP Front Rear Panel Back Panel Front Panel Dimensions 200 165 182 201 460 660 400 449 300 306 TS 990S SP 990 Unit mm At front leg up position 15 Options Specifi cations HF 50MHz TRANSCEIVER TS 990S Main Options TS 990S Specifi cations General Frequency range Transmitter 160m band 1 81 2 0 MHz 80m band 3 5 3 8 MHz 60m band 1 5 25 5 45 MHz 40m band 7 0 7 2 MHz 30m band 10 1 10 15 MHz 20m band 14 0 14 35 MHz 17m band 18 068 18 168 MHz 15m band 21 0 21 45 MHz 12m band 24 89 24 99 MHz 10m band 28 0 29 7 MHz 6m band 50 0 52 0 MHz Frequency range Receiver 2 0 13 30 MHz 50 54 MHz VFO Continuous 30 kHz 60 MHz Mode A1A CW A3E AM J3E SSB F3E FM F1B FSK G1B PSK Frequency stability Within 0 1 ppm 0 C 50 C Antenna impedance 50 Antenna tuner load range 16 7 150 Standard voltage AC 220 240 V 50 60 Hz Supply voltage range 10 AC 198 V 264 V Power consumption At transmit maximum 840 VA or less At receive no signal 200 VA or less Usable temperature range 0 C 50 C Dimensions Without projection W 460 x H 165 x D 400 mm Include projection W 460 x H 182 x D 449 mm At2. recommend using stereo headphones to fully utilize simultaneous dual reception function of the main unit NEW NEW NEW
3. speed SPEED VOICE The PF key default is for voice trans mission but you can also assign a different function to it FIL SEL Preset the bandpass width to 2 types or 3 types with the DSP IF filter for quick WIDE NAR switching operations The dedicated sub receiver with extensive interfer ence elimination is centrally located at the right edge of the main panel Access the knobs and keys you need without hesitation Share the use of main and sub band variable encoders by switching the operations object An LED is lit when operating the sub band to prevent accidental operation this can also be dedicated to the main encoder variable band width Other functions have been signifi cantly up graded in the TS 990S from the TS 590S including band elimination fi lters APF mute the addition of slope switching in the DSP IF FILTER independent AGC OFF key and simultaneous use of NB1 NB2 Using the ARCP 990 software radio control soft ware you can control most functions from your PC Control the memory channel settings and functions using your PC Download the free software from the Kenwood website ARCP 990 example views In addition to the legacy presets up to a maximum of three user settings can be confi gured You can store the equalizer settings used for each mode dand enjoy a very comfortable rag chew session with others Equipped with voice guidance for frequencies key control and setting You can also record an
4. this is a convenient func tion for operations such as dampen ing interference signals even if it cuts down some of the target signal IF filter bandwidth variability Band elimination filter function Extensive interference elimination and noise reduction functions You can eliminate overpowering interference signals with a notch filter and catch intended weak signals You can switch between the IF auto notch and the manual notch that can be changed manually depend ing on the state of interference It is possible to preset a maximum of three IF filter switch and switch instantly at any time Set for narrow or wide such a function is convenient for com petitions requiring quick operations WIDTH If the interference is on one side only you can shift the central frequency without changing bandwidth You can avoid neighbouring signals by varying the bandpass width Target signal Intended signal SHIFT SHIFT WIDTH IF filter A B C one touch switch instantly IF notch IF Manual Notch BW 400Hz 800Hz Amplitude dB Frequency Hz 1 000 80 60 40 20 0 500 0 500 1 000 Equipped with an analogue noise blanker NB1 which is considered being effective against weak noise and a digital noise blanker NB2 Choose the NB1 or NB2 based on noise type and reception con dition With NB1 stable noise reduction is possible without depending on reception bandwidth NB2 is effe
5. 00 Hz 2 4 kHz or more 6 dB 4 4 kHz or less 60 dB CW FSK PSK WIDTH 500 Hz 500 Hz or more 6 dB 1 2 kHz or less 60 dB AM LO 100 HI 3000 Hz 6 0 kHz or more 6 dB 12 kHz or less 50 dB FM 12 kHz or more 6 dB 25 kHz or less 50 dB XIT variable range 9 999 kHz Notch lter attenuation 60 dB or more Auto 70 dB or more Manual Beat cancel attenuation 40 dB or more Audio output 1 5 W or more 8 Audio output impedance 8 1 60m band Refer to applicable Amateur Radio regulations to your country 2 MAIN BAND Spec guaranteed in amateur band 160m through 6m 3 In 160m 80m 40m 20m 15m Amateur band IF band width 2 7 kHz or less SSB CW FSK PSK 4 Except in above 3 Internal beat may occur during amateur radio band reception depending on combination of main band and sub band frequencies of a main unit Spurious signal other than reception signal may appear on band scope waterfall view too MC 90 Deluxe Desktop Microphone MC 60A Desk Microphone MC 43S Hand Microphone HS 6 1 Light Weight Headphones ARHP 990 Radio Host Program Freeware Freeware available for download from Kenwood website starting early March 2013 ARCP 990 Radio Control Program Freeware Freeware available for download from Kenwood website starting early March 2013 HS 5 1 Open Air Deluxe Headphones SP 990 External Speaker 1 HS 5 and HS 6 are monaural We
6. 16 16 Alterations may be made without notice to improve the ratings or the design of the transceiver The photographic and printing processes may cause the coloration of the transceiver to appear different from that of the actual transceiver Kenwood House Dwight Road Watford Hertfordshire WD18 9EB United Kingdom www kenwood electronics co uk CA321E E 16 1 HF 50MHz TRANSCEIVER TS 990S For Real DX ers TS 990S HF 50MHz TRANSCEIVER 2 Legend and Innovation 3 TS 990S Actual size 460 W 165 H 400 D mm Projections not included The ultimate DX Contest experience is here Kenwood s long awaited agship model is equipped with the latest technology that embodies an entirely new HF standard 4 1973 TS 900 The all band SSB transceiver is making history for its state of the art technology 1982 TS 930 The HF transceiver is the world s rst Ham Radio transceiver equipped with built in automatic antenna tuner 1985 TS 940 The HF transceiver offers the high dynamic range that won the struggle through the Cycle 22 pile up 1989 TS 950 The HF transceiver is the world s first digitalized unit that comes installed with built in DSP Repeated innovation turns the tradition into a legend External Speaker SP 990 Input 5W NEW 5 2013 TS 990 5 The TS 990S comes equipped with dual receivers for simultaneous dual reception on different bands it also features narrow band roofi ng
7. ctive against noise that cannot be tracked by an analogue noise blanker Plus both the NB1 and NB2 can be used simultaneously with the TS 990S The noise blanker function NB1 NB2 is equipped with digital analogue 2 format lt Other extensive interference elimination and noise reduction functions gt Beat cancel function BC1 BC2 The beat cancel function is effective against relatively weak multiple beats whereas the IF auto notch is effective against strong beats Audio peak filter You can vary bandpass width of pitch tone when there are carrier receptions like CW and FSK FSK is compatible with mark and space frequencies Kenwood continues to provide quality sound trans mission that is unattainable through analog circuits By loading the world premiere DSP on the TS 950 and achieving IF AGC control on the TS 870 by using DSP for the first time for amateur wireless devices As a culmination of the foregoing develop ments three DSP units are used one on each major block of the TS 990S By distributing the signal pro cessing of the main IF band scope and sub IF we have realized ample digital signal processing FM mode is AF DSP processing Equipped with dedicated DSP for the main receiver sub receiver and band scope The reception sound quality of SSB and CW is not solely determined by audio frequency and filter delay properties AGC characteristics play a very significant role as well The opinion of many of our
8. d replay your message Transmit and receive DSP equalizers RX equalizer Voice guidance recording function We equipped the front panel with two USB ports a key jack microphone jack and a headphone jack Use USB memory or a keyboard Increased user friendliness by placing two USB ports on the front panel 13 Useful functions HF 50MHz TRANSCEIVER TS 990S 14 Front Back Panel HF 50MHz TRANSCEIVER TS 990S Back Panel Antenna Connector 4 RX IN Connector RCA Receive Only Antenna Terminal RX OUT Connector RCA External Receiver Connection Terminal Key Jack 6 3 mm For Paddle Vertical Bug Key and PC Keying ACC2 Connector 13 Pin DIN Audio I O and Other Accessories Connection Remote Connector 7 Pin DIN Linear Ampli er Connection Meter Jack 3 5 mm Analogue Meter Connection Drive Connector RCA Drive Output Ground Terminal Standard External I O Terminal BNC 10MHz Front Panel Headphone Jack 6 3 mm Paddle Keyer 6 3 mm USB Connector USB B PC Control USB Audio Microphone Jack 8 Pin Metal Type AC Power Supply Connector 3 Pin AT Connector 6 Pin External Antenna Tuner Connection Keypad Jack 3 5 mm Function Key Pad Connection COM Connector D SUB 9 Pin RS 232C Optical Connector Input Terminal EIAJ Optical Optical Connector Output Terminal EIAJ Optical External Speaker Jack 1 3 5 mm External Speaker Jack 2 3 5 mm
9. dBc Hz Offset Frequency Hz 100 160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 1 000 10 000 100 000 14 1MHz 1 83MHz 82 78 92 48MHz 96 48 107 48MHz 115 48 128 992MHz 127 48 138 992MHz PLL PLL AMP AMP Divider 1 N Main reception unit 1st local oscillator block diagram DDS 1 8 3 5 5M 7M 14 18 21 24M N 10 N 8 N 4 other than these DDS Direct through through through 0 6 12 18dB 270Hz 500Hz 6kHz 15kHz 2 7kHz 1st Mixer Roofing Filters RF BPF ATT Pre Selector Pre Amp Post Amp 500Hz 6kHz TS 990S MAIN BAND FRONT END Roo ng lter characteristic example BW 500Hz Roo ng lter characteristic example BW 270Hz CH1 B R log MAG CH2 B R log MAG IF BW 100 Hz SWP 8 6 sec SPAN 2 kHz 10 dB REF 0 DB 10 dB REF 0 DB SPAN 100 kHz CH1 B R log MAG CH2 B R log MAG IF BW 100 Hz SWP 8 6 sec SPAN 3 5 kHz 10 dB REF 0 DB 10 dB REF 0 DB SPAN 100 kHz Mode Phantom load Start up time Stand by power saving Or Less 0 5W Approx 40 seconds Normal Approx 20W Approx 5 seconds Main receiver HF 50MHz TRANSCEIVER TS 990S Triple DSP Sub Receiver Frequencies of 500 Hz and 2 7 kHz are standard for sub receiver roofing filters You can maintain a Roofing filter 500 Hz 2 7 kHz more or less flat dynamic range even if inter
10. e which you can tune without losing your target signal We have achieved a down conversion format for all amateur bands The horizontal axis shows separation of the target signal by interfering signal frequencies two waves At a frequency of 10 kHz interference 1 refers to reception frequency 10 kHz and interference 2 refers to reception frequency 20 kHz The newly developed mixer contributes to achieving 40 dBm IP3 Main Receiver Amateur band RF BPF Pre Selector feature Transformer feedback RF Amp through through through 0 6 12 18dB 270Hz 500Hz 6kHz 15kHz 2 7kHz 1st Mixer Roofing Filters RF BPF ATT Pre Selector Pre Amp Post Amp Pre Selector 160m BAND 0 0 1 0 2 0 3 0 4 0 5 0 100 80 60 40 20 0 Frequency Hz Amplitude dB The TS 990S has the overwhelmingly highest quality receiver among the TS series The dual receivers facilitate reception on different bands The main receiver is the highest quality receiver among the TS 900 series thanks to its down conversion confi guration newly developed mixer and fi ve types of roofi ng fi lters The highest quality transceiver shows its true metal in contests fi erce pile ups and high intensity signals The TS 990S will surely satisfy any real DX er In place of the Double Balanced Mixer which uses the J FET we have installed the newly developed Double Balanced Grounded Switch Type in the 1st mix
11. e target signal with the main display Sub band display monitors the target signal itself Single frequency display Single frequency display with virtual dial Dual frequency display FSK mode PSK mode Magnifi ed frequency display Simultaneous display Normal display Dual frequency display Basic Screen The 3 5 TFT sub band display is located above the main knob which not only reduces eye movement in reading the frequency but also allows you to moni tor the target signal itself by displaying the demodu lated audio spectrum In addition fi lter effects can Main display Wide dial display Reception speci c Touch sensitive main screen Simply touch the main screen for quick QSY Sub band display Analogue dial display TS 940 type display TS 930 type display When you are in the mood for a change how about these display modes be displayed on the easy to see sub band display allowing for intuitive operation You can switch the sub band display between the four different view modes below according to your intention 11 Dual display HF 50MHz TRANSCEIVER TS 990S 12 Control The panel layout familiar to Kenwood users allows for intuitive operation It is sure to win you over increasing the accuracy of your operations and allowing you to develop greater familiarity with the equipment Comfortable operational performance that you can control at will You can use the frequency function tha
12. er circuit which is the heart of the main receiver The transceiver is also equipped with a pre selector function works on HF amateur band that varies its tuning frequency in tandem with the receiver frequency It effectively dampens interference from strong signals that cannot be minimized through bandpass fi lters on dedicated amateur bands Furthermore we have achieved a 40dBm class of third order intercept point for the signal path of the 1st mixer based on select circuits and components employing large core toroidal coils for protecting against distortion from large input signals as well as using relays for the signal switching 7 1st Mixer The transceiver uses a down conversion method for all amateur band reception and features five types of High IP roofing filter Narrow bandpass widths selectable are 500 Hz and 270 Hz for CW operation 2 7kHz for SSB and 6kHz and 15kHz which are suitable for AM FM These filters are automatically selected in tandem with DSP based fi nal bandpass settings Of course manual switch ing is possible as well The newly developed narrow band High IP roofi ng fi lter shows its true value by cutting adjacent unwanted signals The standard equipment includes a TCXO Temperature Compensated crystal Oscillator which stabilizes frequen cies at 0 1ppm as the standard signal source Unlike OCXO Oven Controlled crystal Oscillator which requires warm up time this device can star
13. fans that even for long periods of time they never get tired of listening is due to the characteristics of Kenwood s AGC The TS 990S goes a long way in helping further refine the Kenwood tone by innovating not only the AGC control al gorithm on the DSP but also the analog AGC unit as well IF AGC control block diagram RX IF AGC DET RX Audio IF Filter AutoManual Notch Band Elimination Filter OUT Band ATK REL Manager AGCV DAC Analog AGCV IF ADC Digital NB AGC DET AGC DET Demod SOFT ATK CONT The device is also equipped with two types of noise reduction format NR1 and NR2 An optimal noise reduction format is applied to each reception mode for NR1 And for NR2 SPAC method is applied which is more effective in CW operation DSP based noise reduction function NR1 NR2 9 HF 50MHz TRANSCEIVER TS 990S DSP IF filter Transmit ANT 1 2 3 4 MAIN RX ANT OFF MAIN BAND RECEIVER SUB BAND RECEIVER OFF ON ON AT RX TX MAIN BAND ANT Selector SUB BAND ANT Selector Transmission Unit RX OUT RX IN SUB RX ANT 3rd order TX IMD 14 2MHz 200W SPAN 10 kHz 10 dB div 10 50 70 90 30 FET attributes Further you can realize Kenwood s distinctive tone by amplifying the clean modulated signal produced by DSP with an amplifi er that ex hibits excellent linearity The device uses POWER MOSFET VRF150MP which runs at 50V with push pull Yo
14. ference impinges on your reception frequency thanks to superior close in dynamic range properties You can clearly catch signals under conditions made prob lematic by strong close in interference signals Down conversion occurs on the 160m 80m 40m 20m 15m bands The sub receiver which incorporates the TS 590S receiver Two attractive features of simultaneous dual reception for different bands are that you can easily change the condx on other bands and easily handle split operation From this single device a whole new array of strategies becomes possible Super sub which supports simultaneous dual reception Innovation spurred by digital technology has revolutionized the Kenwood tone Even after using narrow bandwidth filters for long periods of time it is still easy to hear and less tiring to listen to In addition to introducing AGC control using dedicated DSP we have further refined the Kenwood tone and reception sound quality transmitted by radio operators worldwide by innovating the analogue AGC unit and installing numerous interference and noise elimination functions Such innovations have given new life to Kenwood s legendary tone The sub receiver features performance that has exceeded its class since going on sale thus further refining this popular receiver on the TS 590S Be cause this is particularly the case on the front end where it employs circuit configuration that makes down conversion
15. fi lters on the main receiver in a full down conversion confi guration The new TS 990S achieves the highest basic reception performance of any radio in the TS series through the careful selection of circuits components and accelerating analysis using triple DSP confi guration The Trio tone has evolved into Kenwood tone Also thanks to the dual TFT display and superior panel layout it achieves both comfortable visibility and operability Our top of the line transceiver is for all radio operators who love HF HF 50MHz Transceiver TS 990S Output 200W NEW Comparison 3rd order Intercept Point characteristics Intercept Point dBm Interfering wave separation kHz frx 14 2MHz PRE AMP OFF BW 500Hz MODE CW 20 00 1 10 100 10 00 0 00 10 00 20 00 30 00 40 00 50 00 TS 990S Our old model 6 A key point in tapping maximum performance from the 1st mixer in actual operation say CW operation is to prevent the outfl ow of unnecessary signals other than the target signal from the mixer to the subsequent stage This is because it can tap the maximum per formance of the digital IF fi lter using the DSP in the fi nal IF stage The TS 990S main receiver employs a 1st IF frequency 8 248 MHz down conversion format It achieves superior close in dynamic range unattainable through conventional up conversion formats Even if the interference is a close in frequency the receiver maintains a relatively fl at dynamic rang
16. four antenna terminals which can be set independently on amateur bands whether main band or sub band The reception input and output terminals can be used for reception dedicated antennas antenna output for external reception devices and external BPF connections It is usable with either the main band or the sub band Thermal simulation example To dissipate the heat of the 200 W nal we used swage ns instead of the conventional extruded aluminum ns Using CAE analysis we designed the optimal n shape and size for heat dissipation 10 Transmission unit cooling HF 50MHz TRANSCEIVER TS 990S Dual display The combination of two displays main and sub band allows you to simultaneously monitor the target signal and the surrounding area with minimal eye movement Fitted with dual TFT displays for an intuitive situational understanding Main display example views Equalizer view Waterfall view RTTY reception view scope function that allows you to monitor band sta tus Execute fast sweeps with FFT processing using DSP Switch to different view modes such as water fall and reception transmission equalizer views The main display shows basic information about the frequency mode meter and others functions as well as the on off status of the other accessory func tions You can also view internal parameter settings and memory lists In addition it features a band Main display Monitor the area surrounding th
17. front leg up position H 201 mm front panel H 173 mm rear panel Weight Approx 24 5 kg Transmitter Output power CW SSB FSK PSK FM AM 200 W 50 W Modulation SSB Balanced AM Low Power FM Reactance Maximum frequency deviation FM wide 5 kHz or less narrow 2 5 kHz or less Spurious emissions HF Harmonics 60 dB or less HF others 50 dB or less 50 MHz 66 dB or less Carrier suppression 60 dB or less Unwanted sideband suppression 60 dB or less Transmit frequency response Within 6 dB 300 2700 Hz Microphone impedance 600 XIT variable range 9 999 kHz Receiver Circuit type Main Sub1 3 Sub2 4 Double superheterodyne Double superheterodyne Triple superheterodyne Intermediate frequency 1st IF 8 248 MHz 11 374 MHz 73 095 MHz 2nd IF FM 24 kHz 455 kHz 24 kHz 10 695 MHz 3rd IF FM 24 kHz 455 kHz Sensitivity TYP SSB CW FSK PSK S N 10 dB 0 5 V 0 13 0 522 MHz 4 V 0 522 1 705 MHz 0 2 V 1 705 24 5 MHz 0 13 V 24 5 30 MHz 0 13 V 50 54 MHz AM S N 10 dB 6 3 V 0 13 0 522 MHz 32 V 0 522 1 705 MHz 2 V 1 705 24 5 MHz 1 3 V 24 5 30 MHz 1 3 V 50 54 MHz FM 12 dB SINAD 0 22 V 28 30 MHz 0 22 V 50 54 MHz Image Rejection Ratio 50 MHz 70 dB 60 dB or less IF Rejection Ratio 70 dB or less Selectivity SSB LO 200 HI 28
18. imilar to the legacy series you can add functions via M S and M S giving a dual action quick split setup Operability HF 50MHz TRANSCEIVER TS 990S SUB BAND RX TX key MAIN BAND RX TX key Kenwood SKY COMMAND SYSTEM II Commander TH D72E TM D710E 430 MHz 144 MHz Transporter TH D72E TM D710E 430 MHz 144 MHz HF Transceiver TS 990S COM connector 3 5 mm EXT SP MIC HF antenna 430 MHz band Con rmation of HF frequency 144 MHz band HF receive audio 430 MHz band Voice signals Control signals Transporter Commander Kenwood SKY COMMAND SYSTEM II uses a pair of TH D72E TM D710E transceivers TS 990S is limited to the following functions in the operation of the current KSS Operation Commander A B in the TS 990S is equivalent to M S Memory channel is simplex operation only Remote power On Off is not available on Standby State Low Power Consumption mode Control to the main band operation only Note Refer to applicable Amateur Radio regulations to check whether you are permitted to use this function Enables full duplex operation with improved functionality such as visual confirmation of HF frequency on the LCD panel Control via TNC AX 25 enables more accesses to HF functions XIT mode switching split frequency operations on off memory shift and frequency step selection The transporter sends out its pre programmed call sign via CW every 10 minutes Centrally Located Extensi
19. possible on the leading five ama teur bands it can be used in actual operation despite being just a sub receiver The IF bandwidth for 160m 80m 40m 20m 15m bands is SSB CW FSK PSK for frequency levels 2 7 kHz or below 8 Sub receiver HF 50MHz TRANSCEIVER TS 990S Band Elimination Filter 1 000 80 60 40 20 0 500 0 500 1 000 Amplitude dB Frequency Hz For main IF DSP transmission unit ADSP 21363 clock 333 MHz For sub IF DSP every kind of signal processing ADSP 21369 clock 260 MHz For band scope ADSP 21363 clock 333 MHz Advanced AGC control fusing together digital and analogue The sound quality of the built in speakers is largely determined by the chassis structure With the TS 990S we have been able to mini mize unnecessary chassis vibration through multiple simulations from the conceptual phase The Kenwood tone is supported not only by circuits and DSP but also by exact chassis design Exacting chassis design for realizing quality sound 77mm Built in speaker Top plate oscillation simulation example You can vary DSP filter bandwidth and eliminate ex tensive interference depending on use and condition You can operate it as a HI CUT LOW CUT function in SSB AM FM mode and WIDTH SHIFT function in CW FSK SSB DATA transmission mode The filter is capable of varying the stopband band width and the amount of loss When signals that interfere with the target signal multiply
20. t switches legacy VFO A VFO B by switching the main and sub band Turn the sub band reception on and off using the RX key on top of the main knob and switch between simplex and split using the TX key A single glance at the LED lighting lets you know the current status The new frequency function can be operated intuitively 1 Hold down the Sub Band TX key and the split LED will ash The new split function allows you to use quick settings can easily call up the states of simultaneous dual reception using the dual channel memory Memory for a maximum of 120 channels is avail able In addition to the repeater frequency you can also preset beacons and transmission stations You You can also input split and sub band reception states into memory Number of Memory Channels Standard Memory 100 Channels Interval Speci ed Memory 10 Channels Extended Memory 10 Channels 2 When the transmission frequency is set To set 2UP simply press 2 on the numeric keypad and the sub band VFO will change 2 kHz from the main reception frequency split set up is now complete To set 1DOWN press 0 and then 1 on the numeric keypad and you can set increments of 1 kHz from 1 9 kHz 2 Searching for a transmis sion frequency Operate the sub band knob to determine the transmission frequency press the TX key and setup is complete Coarse adjustment is also possible by tapping a likely vacant frequency on the main scope S
21. t up quickly even from the power off position while maintaining a high level of stability It is in compliance with European energy saving standard Lot6 Power consumption in stand by energy saving mode is less than 0 5 W A BNC connector on the rear panel provides 10MHz reference I O The TS 990S Local Oscillator Circuit is an independent confi guration that combines the main receiver and VCO Frequency Division DDS Direct the sub receiver and DDS Direct and the transmitter and conventional PLL with the targeted signal system The newly developed VCO frequency division format is used for the 1st lo cal oscillator of the main receiver The device achieves favourable C N characteristics that rival the DDS direct format and relatively spurious free local oscillation signals that are characteristic of the PLL format by oscillating and dividing the VCO at higher frequencies than the intended frequency It is possible to convert it to 1st IF in a pure state without leaking the target signal as noise by reducing static noise from the local oscilla tor and increasing the C N ratio You can realize high C N levels by dividing high frequencies using the newly developed VCO frequency division 1st local oscillator Comes equipped with 0 1ppm TCXO which combines high stability and energy saving DDS IC AD 9951 Main receiver 1st Local Oscillator C N main receiver characteristic example 20m 160m TS 990S MAIN Local OSC C N Phase Noise
22. u can obtain a high stable output of 200 W on all bands You can achieve superior IMD properties by pursuing bias and matching conditions in order to fully exploit the High reliability design promises stable operation at 200W The built in automatic antenna tuner is a preset type that covers amateur band frequencies rang ing from 160m 6m and can be switched in on receive too The tuner is capable of rapid QSY based on instantaneous band change using a relay system that is known for high speed operations The relay inductors and coil use large sized com ponents that are able to bear the 200 W output Built in automatic antenna tuner capable of high speed operation Cooling is very important to obtain a stable output of 200 W Heat dissipation effi ciency is increased in the TS 990S through a large fi n type aluminium heat sink An independent variable speed fan is provided for the switching power supply final unit and antenna tuner cooling each unit with a suffi cient air supply The switching power supply and the fi nal unit have twin cooling fans Noise is reduced by controlling the fan speed according to the temperature Cooling system to send a suffi cient volume of air to each unit Operating stably even when continually working over long periods of time such as in competitions Transmitter performance featuring high scale speci cations can withstand long periods of operation at full power It is out tted with
23. ve inter ference elimination sub Receiver Frequently used functions are centrally placed in the immediate vicinity of the main and sub band knob Supports quick operations Useful functions positioned around the main and sub band knob Switch to update mode and insert USB memory into the USB A port on the front panel and the update will automatically begin In addition access your USB memory from your PC by connecting your PC via USB cable to the USB B port on the rear panel switch to update mode and a folder named TS 990 will appear on your computer Firmware updates by USB ash drive or USB cable There are a variety of I O interfaces including the microphone jack analogue audio input and output USB audio interface and optical digital interface By combining DATA mode 1 3 with SSB FM AM modes it is possible to easily switch between an external device for modulation and demodulation Switch between DATA VOX function and mute for each modulated line DATA mode supported by external I O switching Remote control the TS 990S from your PC Sub receiver with extensive interference elimination controls centered on the right side of the main panel LOCK F LOCK Key Useful when used in combination with TF SET CW T CW Tune Automatic tuning makes the target signal turn into pitch frequency at a press of the CW tune key FINE The frequency change speed of the tuning knob can be set to 1 10 of the original
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